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I personally wouldn¹t call a t-stat an effect size because of the division by the variance. A %BOLD scaled image would not have its intensities determined by the spatial distribution of the noise. Matt. On 8/21/18, 8:56 AM, "FSL - FMRIB's Software Library on behalf of Michele Andrea Ferrandino" <[log in to unmask] on behalf of [log in to unmask]> wrote: >Thanks Matthew. > > > > >Hi Micky, > The phrase ³Effect size² can be taken to mean different >things to different people. In terms of statistical effect size you can >take the ³raw² t-statistics that are produced by randomise, although you >can just use the PE/COPEs as un-normalised effect sizes. Note that you >can also use the option --glm_output in randomise to generate the >COPE/PE images etc. > >Hope this helps, >Kind Regards >Matthew >-------------------------------- >Dr Matthew Webster >FMRIB Centre >John Radcliffe Hospital >University of Oxford > >> On 20 Aug 2018, at 21:18, Michele Andrea Ferrandino >><[log in to unmask]> wrote: >> >> Hello, >> After I run randomise for a my DTI study, I run film_fls in order to >>obtain COPE and PE. >> Now, and sorry if the question is stupid: How can I calculate the >>effect size from COPE or PE? >> Is there any 'manual' for film_gls? >> >> Thanks, >> Micky > >######################################################################## > >To unsubscribe from the FSL list, click the following link: >https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1 ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1